Which of the following is TRUE about the partial pressure of oxygen? A) Atmospheric air averages 79 percent of total atmospheric pressure. B) Blood is the most important factor that determines the extent to which O₂ will combine with haemoglobin. C) Arterial blood is decreased when haemoglobin preferentially combines with CO rather than O₂. D) Arterial blood is increased in high atmospheric pressure.

Question

Quizplus · Accepted Answer

Blood is the most important factor that determines the extent to which oxygen will combine with haemoglobin. This is because oxygen needs to be transported through the bloodstream and delivered to the body tissues. Haemoglobin is the protein in red blood cells that binds with oxygen in the lungs and releases it in the tissues.

Which of the Following Is TRUE About the Partial Pressure